var express = require('express');
var path = require('path');
var favicon = require('serve-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var session = require('express-session');
var bodyParser = require('body-parser');

var routes = require('./routes/index');
var api = require('./routes/api');
var config = require('./config.json');
var db = require('./database.js');
var log4js = require('log4js').getLogger();


if (config.db) {
    var connection = db.open(config.db);
}

var app = express();

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'ejs');

// uncomment after placing your favicon in /public
app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')));
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({extended: false}));
app.use(cookieParser());
var sessionMiddleWare = session({
    name: 'beecode.sdp',
    cookie: {maxAge: 36000000},
    secret: 'beecode.mk.sdp'
});
app.use(sessionMiddleWare);
app.sessionMiddleWare = sessionMiddleWare;

app.use(express.static(path.join(__dirname, 'public')));

app.use(function (req, res, next) {
    res.format_json = function (data, code, message) {
        res.json({
            data: data,
            code: code,
            message: message
        });
    };
    next();
});
app.use('/api/', api);
app.use('/', routes);

// ensure all the requests come from a login user
app.use(function (req, res, next) {
    if (req.session.user) {
        next();
    }else{
        var client_id = config.auth.client_id;
        var client_secret = config.auth.client_secret;
        var back_uri = config.auth.back_uri;
        var client_name = config.auth.client_name;
        var uc = config.auth.uc;
        res.redirect(uc+'/oauth/authLogin?client_id=' + client_id + '&client_secret=' + client_secret + '&back_uri=' + back_uri);
    }
});

// catch 404 and forward to error handler
app.use(function (req, res, next) {
    var err = new Error('Not Found');
    err.status = 404;
    next(err);
});

// error handlers

// development error handler
// will print stacktrace
if (app.get('env') === 'development') {
    app.use(function (err, req, res, next) {
        res.status(err.status || 500);
        res.render('error', {
            message: err.message,
            error: err
        });
    });
}

// production error handler
// no stacktraces leaked to user
app.use(function (err, req, res, next) {
    res.status(err.status || 500);
    res.render('error', {
        message: err.message,
        error: {}
    });
});


module.exports = app;
